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Title: Experimental demonstration of fresh bunch self-seeding in an X-ray free electron laser

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4980092· OSTI ID:1351977
ORCiD logo [1];  [2];  [2];  [2];  [2];  [2];  [3]
  1. Univ. of California, Los Angeles, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Univ. of California, Los Angeles, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Here, we report the generation of ultrahigh brightness X-ray pulses using the Fresh Bunch Self-Seeding (FBSS) method in an X-ray Free Electron Laser (XFEL). The FBSS method uses two different electron slices or bunches, one to generate the seed and the other to amplify it after the monochromator. This method circumvents the trade-off between the seed power and electron slice energy spread, which limits the efficiency of regular self-seeded FELs. The experiment, the performance of which is limited by existing hardware, shows FBSS feasibility, generating 5.5 keV photon pulses which are 9 fs long and of 7.3 ×10–5 bandwidth and 50 GW power. FBSS performance is compared with Self Amplified Spontaneous Emission/self-seeding performance, measuring a brightness increase of twelve/two times, respectively. In an optimized XFEL, FBSS can increase the peak power a hundred times more than state-of-the-art to multi-TW, opening new research areas for nonlinear science and single molecule imaging.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; SC0009983
OSTI ID:
1351977
Alternate ID(s):
OSTI ID: 1361818; OSTI ID: 1368378
Journal Information:
Applied Physics Letters, Vol. 110, Issue 15; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

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Cited By (14)

Generation of narrow-band X-ray free-electron laser via reflection self-seeding journal March 2019
Experimental demonstration of free electron maser operation in the regime of non-resonant trapping journal October 2019
Photochemical pathways in nucleobases measured with an X-ray FEL
  • Wolf, Thomas J. A.; Gühr, Markus
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 377, Issue 2145 https://doi.org/10.1098/rsta.2017.0473
journal April 2019
Matching-based fresh-slice method for generating two-color x-ray free-electron lasers journal September 2017
Generation of coherent two-color pulses at two adjacent harmonics in a seeded free-electron laser journal February 2018
High-Power Femtosecond Soft X Rays from Fresh-Slice Multistage Free-Electron Lasers journal June 2018
Control of the Lasing Slice by Transverse Mismatch in an X-Ray Free-Electron Laser journal August 2018
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